'''
num=input("input some num:")
alist=[]
for i in range(num):
    x=input()
    alist.append(x)
alist.sort()
alist.pop()
alist.pop(0)
ave=sum(alist)/len(alist)
print '%.2f' %ave
'''
week=['x','xx','xxx','xxxx','xxxxx']
weekend=['xxxxxx','xxxxxxx']
week.extend(weekend)
for i,j in enumerate(week):
    print i+1,j